Post-Gazette: The state Department of Environmental Protections reasonable new regulations to reduce methane emissions in natural gas production should be embraced by the industry. For one thing, its good business. As Marcellus Shale Coalition president David Spigelmyer said himself, Shale-related methane emissions continue to steeply drop as production sharply climbs, thanks to best practices by drillers in recent years. That instinct to reduce methane output ought to be reinforced by government. The state...